Jump to content

Welcome to RennTech.org Community, Guest

There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.

Here are some of the features available - once you register at RennTech.org

  • View Classified Ads
  • DIY Tutorials
  • Porsche TSB Listings (limited)
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • View Reviews
  • and get rid of this welcome message

It takes just a few minutes to register, and it's FREE

Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)

  • No ads - advertisements are removed
  • Access the Contributors Only Forum
  • Contributing Members Only Downloads
  • Send attachments with PMs
  • All image/file storage limits are substantially increased for all Contributing Members
  • Option Codes Lookup
  • VIN Option Lookups (limited)

Homelink hardwire help

Recommended Posts

I've purchased a Homelink transmitter, intending to connect it to the cigarette lighter for power and to a 996 targa top switch to operate my gate and garage door. The cigarette power connector is always hot.

A picture of the business end of the Homelink switch is attached. My electrical aptitude, on a scale of 1 to 10, is "Amish", so I want to run some things by other experts.


1. The Homelink device has obvious + and - power connectors (not shown), so I guess I'm supposed to solder wires to those connectors and tap into the corresponding wires on the cigarette connector.

2. The conductor running across the bottom of each switch in the picture is negative? So, I only need one solder to any negative point and connect the other end to the negative on the dash switch (center single prong on the switch).

3. The conductors running across to each switch individually must be positive? So I need to solder a wire to a positive on the Homelink button and connect to one of the dual center prongs on the dash switch? Repeat for each door? Each switch has two vertical center prongs, so each side of the rocker will operate a separate door?

4. I need to tap in the switch illumination to another illuminated switch?

5. Any tips on soldering in the vicinity of this ribbon connectors?

I've checked out Loren's post and his Homelink doesn't look much like mine. Nonetheless, I think the concept is captured. I've also checked itzkrib's post, and some of it is inapposite because of the hotwire vs. battery. Thanks.

Link to comment
Share on other sites


I recently did this install with what looks to be the same type of Homelink you are using. Regarding your questions:

1. I tapped into the handsfree cell phone adaptor under the front consol. The brown wire is ground. The wire second from the opposite end is switched power. You can use that if you don't want the homelink to work without the key in the ignition switched on. Otherwise, use the always on power at the opposite end (I used the switched one).

2 and 3. I don't remember off the top of my head which conductors are which, but I actually did the opposite of what you suggest. That is, I connected the positive conductor to the center switch position (I used a window switch; I don't know if the targa switch is wired the same). I then connected a negative from each of two of the homelink switch positions to the corresponding left and right position of the window switch. I'll try to take some pictures to show this.

4. I put the window switches (I actually used two postions from each of two homelinks) in the "batwing" next to the heated seat switches and tapped off of them for the lighting. Again, I'll try to take some pictures to show this.

5. For the soldering, I took off the rubber Homelink button covers and soldered on the opposite side from that shown in your pictures. It was a PITA, but I am not a soldering expert.

Link to comment
Share on other sites

Here are some pics. I apologize for the poor quality, but hopefully they'll help.

Overview Pic -- Two window switches in Targa Batwing 4 position switch plate (to control 4 doors). Dimming light tapped off of heated seat. Homelink under consol in background. Power tapped off of cell adapter.


One of window switches on left, heated seat switch on right. Blue wire connects Brown center postion wire from heated seat to Outside Raised side of window switch. Red wire connects Grey/Blue/Red dot wire from outside heated switch to Outside depressed portion of window switch.


Power tap. Green ground wire connected to Brown ground wire of cell adapter. Yellow wire to Green/Black switched power of cell adapter. Note that Green/Red on end opposite the Brown ground wire of cell adapter is always on power, if you prefer that.


Worst pic of all. Buttons for Homelink. Black button at left still has rubber covering; this one is not used. At far right, very blurry, is the indicator LED. Center button, red wire at bottom is connected to the single center position of the window switch. Red wire is soldered to lower right corner connection point of center Homelink button. Green wire veering to the left is connected to one of the two parallel center positions of the window switch (don't be mislead by Green wire heading to the top center background of pic; that is the grounding wire for the Homelink power supply that connects to the cell adapter). The other Green wire is soldered to the upper right connection point of center Homelink button. Black wire connects to the other parallel center position of window switch. It is soldered to upper right connection point of the right-most Homelink button.


Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.